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Study on visible light photocatalytic activity and mechanism of spherical Bi 12TiO 20 nanoparticles prepared by low-power hydrothermal method

Study on visible light photocatalytic activity and mechanism of spherical Bi 12TiO 20 nanoparticles prepared by low-power hydrothermal method,10.1016/

Study on visible light photocatalytic activity and mechanism of spherical Bi 12TiO 20 nanoparticles prepared by low-power hydrothermal method   (Citations: 3)
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Bismuth titanate (Bi12TiO20) nanoparticles with spherical structures and good dispersion were synthesized hydrothermally using C6H13BiN2O7·H2O and TiCl3 in the presence of polyethylene glycol (PEG). Only 2h of hydrothermal process was needed which means the whole process of preparation was a less power consumption. X-ray diffraction (XRD) proved that the samples were in pure cubic phase. UV–vis diffuse reflection spectra showed the band gap of Bi12TiO20 is about 2.65eV. Brunauer–Emmett–Teller (BET) analysis showed that the Bi12TiO20 samples have higher surface areas. Visible-light-induced photodegradation of acid orange 7 (AO7) on Bi12TiO20 was investigated. It was found that Bi12TiO20-assisted photocatalytic degradation of AO7 occurs via two processes: the photocatalytic process of Bi12TiO20 semiconductor and the photosensitized process of AO7. Photocatalytic experiments in the presence of N2 and the radical scavenger suggested that OH and O2− are two main active species in the whole degradation process.
Journal: Applied Catalysis B-environmental - APPL CATAL B-ENVIRON , vol. 102, no. 1, pp. 316-322, 2011
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    • ...Zhu et al. reported that spherical Bi12TiO20 nanoparticles exhibit high photocatalytic activity toward photodegradation of acid orange seven under visible light irradiation (Zhu et al. 2011)...
    • ...Second, catalysis by BiT nanocrystals has been intensively studied recently (Hou et al. 2009, 2010a, b, c, 2011a, b; Zhu et al. 2011; Wei et al. 2009), but the test of these BiT nanorods associated optical properties and photocatalytic activities in the degradation of Rhodamine B under visible-light irradiation has been rarely reported...
    • ...pose the organic dye (Zhu et al. 2010, 2011)...

    Jungang Houet al. Facile synthesis and visible-light photocatalytic activity of bismuth ...

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